<template>
	<view>
		<view class="search-box">
			<uni-search-bar @confirm="search" @input="input" :radius="100" cancelButton="none"></uni-search-bar>
		</view>
		
		<!-- 搜索建议列表 -->
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item)">
				<view class="goods-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		
		
		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>	搜索历史</text>
				<uni-icons type="trash" size="17" @click="clean"></uni-icons>
			</view>
				<!-- 列表区域 -->
				<view class="history-list">
					<uni-tag :text="item" v-for="(item, i) in historyList" :key="i" @click="gotoGoodsList(item)"></uni-tag>
				</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,
				kw: '',
				//搜索的结果列表
				searchResults: [],
				// 搜索历史的数组
				historyList: []
			};
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		computed: {
			histories() {
				return [...this.historyList].reverse()
			}
		},
		methods: {
			// input 输入事件的处理函数
			input(e) {
				
				clearTimeout(this.timer)
				
				this.timer = setTimeout(() => {
					this.kw = e
					this.getSearchList()
				},500)
			},
			 async getSearchList() {
				//判断搜索关键词是否为空
				if(this.kw.length === 0) {
					this.searchResults = []
					
					return
				}
				
			const {data: res} = await uni.$http.get('api/public/v1/goods/qsearch', { query: this.kw })
			if (res.meta.status !== 200) return uni.$showMsg()
			this.searchResults = res.message
			
			this.savsSearchHistory()
			
			},
			gotoDetail(item) {
				console.log(item.goods_id)
				uni.navigateTo({
					url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
				})
			},
			savsSearchHistory() {
				// this.historyList.push(this.kw)
				
				
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				
				
				this.historyList = Array.from(set)
				
				
				// 对搜索历史数据,进行持久化的储存
				uni.setStorageSync('kw', JSON.stringify(this.historyList))
			},
			clean() {
				this.historyList = []
				uni.setStorageSync('kw', '[]')
			},
			gotoGoodsList(kw) {
				uni.navigateTo({
					url: '/subpkg/goods_list/goods_list?query=' + kw
				})
			}
		}
		
	}
</script>

<style lang="scss">
.search-box {
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list {
	padding: 0 5px;
	.sugg-item {
		display: flex;
		align-items: center;
		justify-content: space-between;
		font-size: 12px;
		padding: 13px 0;
		border-bottom: 1px solid #efefef;
		
		
		.goods-name{
				white-space: nowrap;
				overflow: hidden;
				text-overflow: ellipsis;
		}
	}
}

.history-box {
	padding: 0 5px;
	
	.history-title{
		display: flex;
		justify-content: space-between;
		height: 40px;
		align-items: center;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
		}
		
	}
}
</style>
